WO1992006529A1 - Dispositif de refroidissement par liquide de moteur electrique - Google Patents

Dispositif de refroidissement par liquide de moteur electrique Download PDF

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Publication number
WO1992006529A1
WO1992006529A1 PCT/JP1991/001343 JP9101343W WO9206529A1 WO 1992006529 A1 WO1992006529 A1 WO 1992006529A1 JP 9101343 W JP9101343 W JP 9101343W WO 9206529 A1 WO9206529 A1 WO 9206529A1
Authority
WO
WIPO (PCT)
Prior art keywords
housing
liquid
coolant
core
cooling device
Prior art date
Application number
PCT/JP1991/001343
Other languages
English (en)
Japanese (ja)
Inventor
Kosei Nakamura
Yukio Katsuzawa
Yasuyuki Nakazawa
Original Assignee
Fanuc Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fanuc Ltd filed Critical Fanuc Ltd
Publication of WO1992006529A1 publication Critical patent/WO1992006529A1/fr

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K9/00—Arrangements for cooling or ventilating
    • H02K9/19—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil
    • H02K9/197—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil in which the rotor or stator space is fluid-tight, e.g. to provide for different cooling media for rotor and stator

Definitions

  • the present invention relates to a cooling device for a motor, and more particularly to an improvement in a liquid cooling device for a motor that effectively absorbs heat generated during a stay of the motor with a cooling liquid.
  • liquid cooling type cooling device (hereinafter simply referred to as a liquid cooling type) has a higher cooling effect than an air-cooled type cooling device. Has the advantage of being easily obtained
  • an external casing is provided around the outer periphery of the stay core to cool the stay core located on the outer peripheral side of the motor rotor.
  • a liquid cooling device in which a cooling liquid is fixedly adhered and a cooling liquid flow passage is provided inside the outer casing (for example, International Patent Application No. PCT No. JP 90/0886). 5)
  • the external casing is interposed between the stay core and the coolant, the cooling effect is particularly large for motors with large heat generation. May be insufficient.
  • a liquid cooling device in which a cooling liquid flow path is formed directly inside the device has also been proposed.
  • This liquid cooling device has the advantage that the coolant can directly absorb heat from the steel core, but the steel core is generally made of a magnetic material such as silicon steel. Since it is a laminate of many thin plates, the axial direction of the motor is used to support the gap between each thin plate, the rotor shaft of the rotor, and to hold the stay core. Means are required to prevent the coolant from leaking from the gaps between the front and rear nozzles and the stator core located at the front and rear ends and the stator core.
  • the former means for preventing liquid leakage a large number of laminated thin plates of the steel core are fixed tightly with resin or adhesive, and the shaft of the steel core is fixed. End plates are placed at the front and rear ends in the direction, and welding is performed on the outer peripheral surface of the stay core to fix and connect the end plates and the stay core to each other. A liquid-tight structure is adopted in which the evening core is tightly sandwiched, and the front and rear end plates are welded to the stainless steel core. Was secured.
  • the front housing and the rear housing are fixed to each of the end plates with bolts, etc., and the front housing, the stay core, and the rear housing are fixed.
  • a cooling liquid flow path penetrating the interior of the ring was formed.
  • rings are arranged between each end plate and the front housing and the rear housing, respectively, and a resin or an adhesive between the laminated thin plates of the stator core is provided. It worked together to prevent leakage of cooling liquid.
  • the present invention provides a cooling device that can effectively cool a motor core and can maintain a high degree of liquid tightness without impairing the rigidity of the motor housing.
  • the purpose is to provide a liquid cooling device for a motor having a liquid flow path.
  • the present invention comprises a rotor and a stay arranged around the mouth thereof, wherein the stay is arranged between the rotor and the above mouth.
  • a steel core formed by laminating a plurality of thin plates made of a magnetic material, which are arranged at intervals, and which are made to adhere to each other by filling with a resin material.
  • a liquid cooling device for an electric motor comprising: a cooling liquid passage means formed inside a core, for passing a cooling liquid; and a cooling liquid introducing means and a discharging means.
  • the fastening means includes a plurality of bolt through holes formed continuously with the front housing, the stay core, and the rear housing.
  • the front housing and the rear housing are fastened to each other by being screwed together to secure them to the stay core.
  • a liquid cooling device for an electric motor is provided.
  • the coolant flow path means comprises a plurality of coolant flow paths extending in the axial direction inside the stay core and separated from each other in the circumferential direction.
  • the cooling liquid introduction means and the discharge means are provided in either the front housing or the rear housing, and include a plurality of cooling liquid introduction paths for introducing and discharging the cooling liquid and a cooling liquid discharge. It is convenient to get off the road.
  • FIG. 1 is a longitudinal sectional view of an electric motor provided with a liquid cooling device according to the present invention, and is a sectional view taken along line I-I of FIG.
  • Fig. 2 is a front view of a laminated thin plate that constitutes the stationary core of the motor shown in Fig. 1.
  • FIG. 3 is a schematic perspective view showing a coolant flow path of a front housing and a rear housing of the electric motor shown in FIG. BEST MODE FOR CARRYING OUT THE INVENTION
  • a motor having a liquid cooling device is shown in cross section.
  • This motor is disposed inside the motor and has a rotor 10 integrally having a rotating shaft 12 and a rotor 10 is disposed on the outer peripheral side of the motor and has a predetermined distance from the rotor 10.
  • a rotary core 12 disposed at the front and rear ends in the axial direction of the motor to support the rotary shaft 12 of the rotary shaft 10. It has a front housing 16 and a rear housing 18 for sandwiching 14.
  • the front housing 16 includes a bearing 20 at a central opening 16a, and rotatably supports a rotating shaft 12 integrated with the rotor 10.
  • the rear housing 18 includes an annular member 18a and a lid member 18b, and a bearing 20 is disposed at a central opening 18c of the lid member 18b, and a row is similarly formed.
  • the rotation axis 1 2 of It is rotatably supported.
  • Such a separate structure of the rear housing 18 may be used in the liquid cooling device according to the present embodiment to perform a liquid leakage test of the liquid cooling device before incorporating the mouth 10 into the motor. This is to make it possible to implement the method.
  • the concentricity between the annular member 18a and the lid member 18b is strictly designed, and the structure is designed to fit tightly with each other. Jing 18 can be regarded as an integral structure.
  • the stay core 14 is formed by laminating a number of silicon steel sheets 22 as shown in FIG. 2 in the axial direction of the motor.
  • the thin plate 22 is provided with an opening 22a for surrounding the rotor 10 at the center, and a slot hole 24 is provided on the inner periphery of the opening 22a. Then, the winding 26 shown in FIG. 1 is wound around a slot formed by a continuous slot hole 24 formed by laminating a large number of thin plates 22, and The motivation stage is formed.
  • the liquid cooling device in order to effectively absorb the heat generated by the stay core 14.
  • This liquid cooling device has the following special configuration in order to provide a coolant flow passage directly inside the stay core 14.
  • the stay core 14 is formed by laminating thin plates 22 previously coated with a thermosetting adhesive on both sides or by thermosetting into a number of laminated thin plates 22. By impregnating the conductive resin with a vacuum and heating it appropriately, a small gap between the thin plates 22 is sealed.
  • the thin plate 22 has a plurality of cooling liquid passage holes 28a and bolt holes 30a close to the periphery, and is formed by stacking a large number of thin plates 22. These coolant passage holes 28a and bolt holes 30 W 0
  • the cooling liquid flow path 28 and the bolt through hole 30 extending in the axial direction are formed inside the stay core 14 with the continuous a.
  • a pair of coolant flow holes 28 a is arranged at the four corners of the thin plate 22, and a pair of bolt holes 30 a is arranged between each pair of coolant flow holes 28 a.
  • a coolant flow path 28 and a bolt through hole 30 are formed corresponding to these.
  • the housing 16 before sandwiching the stay core 14 is provided with a communication passage 2 at a position corresponding to the above-mentioned coolant flow passage 28 and the bolt through hole 30 respectively.
  • 8b and a screw hole 30b, and similarly, the rear housing 18 includes a communication passage 28c and a through hole 30c, respectively.
  • the bolt through hole 30, the screw hole 30 b, and the through hole 30 c are all provided separately from the coolant passage, the rear nozzle 18 There is no need to provide a special seal structure for the through hole 30c.
  • the communication passages 28b and 28c of the front housing 16 and the rear housing 18 are the coolant passages arranged at the four corners of the thin plate 22 as shown in FIG. It is for communicating 28 with each other.
  • the rear housing 18 includes a coolant introduction passage 28d and a coolant discharge passage 28e connected to an external coolant supply source (not shown).
  • a coolant is introduced into the coolant flow passage 28 of the stay core 14 and used to discharge the coolant from the coolant flow passage 28. In this way, one continuous flow from the coolant introduction passage 28d to the coolant discharge passage 28e through the plurality of coolant passages 28 and the communication passages 28b and 28c. All the coolant passages are formed.
  • the flow direction of the coolant in the continuous coolant passage is arbitrary, and the coolant inlet passage 28 d and the coolant outlet passage 2
  • the position of 8 e can be exchanged.
  • the coolant passage 28 of the stage core 14 and the communication passage 28 b of the front housing 16 and the communication passage 2 of the rear housing 18 A well-known ring 32 is provided at each of the connecting portions of 8 c, the cooling liquid introduction passage 28 d, and the cooling liquid discharge passage 28 e to secure the sealing of each connecting portion. ing.
  • the plurality of housing bolts 34 for fixing the housing are provided with through-holes 30 c of the rear-knowledge 18, and the stationary core 1. 4 is inserted into the through hole 30 of the bolt 4, and the screw part 34 a of the tip of the bolt 34 is screwed into the screw hole 30 b of the front housing 16. The front nose 16 and the rear nose 18 are fastened and firmly fixed to the stay core 14 overnight.
  • the flow path of the cooling liquid formed by the passage 28 c, the cooling liquid introduction path 28 d, and the cooling liquid discharge path 28 e is a resin or adhesive applied between the thin plates 22, and cooling.
  • a higher altitude is provided by a ring 32 provided between the liquid flow path 28 and the communication paths 28 b and 28 c, the cooling liquid introduction path 28 d, and the cooling liquid discharge path 28 e. Maintain hermeticity.
  • the fastening force of the bolt 34 for fixing the front housing 16 and the rear housing 18 to the stay core 14 is different from that of the conventional cooling device.
  • the steel core 14 acts to compress the core 14 in the axial direction, it can be firmly fastened without impairing the sealing performance of the cooling fluid flow passage.
  • the stationary core is effectively reduced. Use long bolts to secure the stay core and the front and rear housings, while still allowing cooling.
  • the evening core is compressed and sandwiched between the front housing and the rear housing, so that the cooling can be performed without impairing the rigidity of the motor housing.
  • a liquid cooling device capable of maintaining a high degree of sealing of a liquid flow passage is provided.
  • front and rear housings that support the rotating shaft of the mouth have the function of an end plate that holds the stay core, so the end plate is omitted.
  • welding process can be eliminated, and the number of parts and the number of manufacturing steps can be reduced, thereby achieving an effect of cost reduction.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Motor Or Generator Cooling System (AREA)

Abstract

Un dispositif de refroidissement par liquide de moteur électrique peut efficacement refroidir le noyau de stator d'un moteur et permet d'avoir une grande étanchéité sans diminuer la rigidité du carter du moteur. Ce dispositif comprend un noyau de stator (14) placé de façon qu'il enveloppe le rotor (10) du moteur et constitué d'une pluralité de tôles minces (22) de matières magnétiques superposées et liées par une résine, d'un carter avant (16) et d'un carter arrière (18) placés respectivement, dans le sens axial, à l'avant et à l'arrière du moteur, supportant l'arbre rotatif (12) du rotor (10) et bloquant entre eux le noyau de stator (14), une pluralité de vis (34) fixant le carter avant (16) et le carter arrière (16) ensemble, en les rapprochant l'un de l'autre, et également au noyau de stator (14). Le dispositif comprend également une pluralité de conduites (28) pour le liquide de refroidissement, définies à l'intérieur du noyau de stator (14) pour permettre le passage du liquide de refroidissement. Lorsque le carter avant (16) et le carter arrière (18) sont fixés au noyau de stator (14) par une pluralité de vis (34), une pression agit en permanence sur le noyau de stator (14), dans le sens axial, et ne diminue pas l'étanchéité des conduites du liquide de refroidissement (28) définies à l'intérieur du noyau de stator (14).
PCT/JP1991/001343 1990-10-03 1991-10-03 Dispositif de refroidissement par liquide de moteur electrique WO1992006529A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2263743A JPH04145859A (ja) 1990-10-03 1990-10-03 液冷ステータコアを有するモータハウジング構造
JP2/263743 1990-10-03

Publications (1)

Publication Number Publication Date
WO1992006529A1 true WO1992006529A1 (fr) 1992-04-16

Family

ID=17393675

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP1991/001343 WO1992006529A1 (fr) 1990-10-03 1991-10-03 Dispositif de refroidissement par liquide de moteur electrique

Country Status (3)

Country Link
EP (1) EP0503093A4 (fr)
JP (1) JPH04145859A (fr)
WO (1) WO1992006529A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0585644A1 (fr) * 1992-09-03 1994-03-09 Licentia Patent-Verwaltungs-GmbH Machine électrique entièrement fermée, refroidie en surface par liquide
DE4229395A1 (de) * 1992-09-03 1994-03-10 Licentia Gmbh Oberflächengekühlte, geschlossene elektrische Maschine
CN103270300A (zh) * 2010-12-14 2013-08-28 阿尔弗雷德·凯驰两合公司 用于高压清洁设备的电机泵单元以及高压清洁设备

Families Citing this family (18)

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JP2823412B2 (ja) * 1992-02-21 1998-11-11 ファナック株式会社 電動機の冷却装置
DE59605610D1 (de) * 1995-02-13 2000-08-24 Siemens Ag Elektrische Maschine
AT412311B (de) * 1995-03-14 2004-12-27 Daimler Chrysler Ag Gehäuseloser elektromotor
DE19716758C2 (de) * 1997-04-12 2002-01-10 System Antriebstechnik Dresden Gehäuselose elektrische Maschine mit mehreren unmittelbar fluiddurchströmten axialen Kühlkanälen
JP3559891B2 (ja) * 1998-06-22 2004-09-02 日産自動車株式会社 多層モータの冷却構造
DE10027246C1 (de) 2000-05-31 2001-10-31 Mannesmann Sachs Ag Elektrische Maschine mit einer Kühleinrichtung
JP3806303B2 (ja) 2000-12-11 2006-08-09 三菱重工業株式会社 発電機における冷却構造
US6992409B2 (en) 2002-03-15 2006-01-31 Denso Corporation Liquid-cooled rotary electric machine integrated with an inverter
US6819016B2 (en) 2002-07-18 2004-11-16 Tm4 Inc. Liquid cooling arrangement for electric machines
JP2006211745A (ja) * 2005-01-25 2006-08-10 Nissan Motor Co Ltd 回転電機のステータ構造
EP2451047A1 (fr) * 2010-11-04 2012-05-09 Siemens Aktiengesellschaft Machine électrice refroidie à l'eau
CN103072476B (zh) * 2013-02-08 2015-09-30 重庆动霸机械制造有限公司 电动车的后桥电动力驱动装置
DE102015207865A1 (de) * 2015-04-29 2016-11-03 Continental Automotive Gmbh Gehäuselose elektrische Maschine
JP6387035B2 (ja) * 2016-03-14 2018-09-05 本田技研工業株式会社 ステータコア
JP6452166B2 (ja) * 2016-05-13 2019-01-16 本田技研工業株式会社 回転電機およびその製造方法
DE102019206011A1 (de) * 2019-04-26 2020-10-29 Robert Bosch Gmbh Stator einer elektrischen Maschine
JP7348482B2 (ja) 2019-07-04 2023-09-21 シンフォニアテクノロジー株式会社 モータ及びステータの製造方法
US20240097521A1 (en) * 2022-09-15 2024-03-21 Wisk Aero Llc Structural stator core

Citations (4)

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Publication number Priority date Publication date Assignee Title
JPS60102827A (ja) * 1983-11-09 1985-06-07 Fanuc Ltd 電動機
JPS61121729A (ja) * 1984-11-14 1986-06-09 Fanuc Ltd 液冷モ−タ
JPH01198243A (ja) * 1988-02-02 1989-08-09 Fanuc Ltd 液冷モータの冷却用管路接合構造
JPH0255551A (ja) * 1988-08-19 1990-02-23 Fanuc Ltd 液冷モータ用冷却液流路構造

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US2700115A (en) * 1950-10-10 1955-01-18 Walt Inc De Air-cooled electric motor
DE3410997A1 (de) * 1984-03-24 1985-09-26 Günter Ing.(grad.) 7832 Kenzingen Fiedler Waermegenerator (maschine zur verwandlung von mechanischer drehenergie in waermeenergie)
JPS61121728A (ja) * 1984-11-14 1986-06-09 Fanuc Ltd 液冷モ−タ
DE3738592C1 (en) * 1987-11-13 1989-05-24 Licentia Gmbh Electric motor for driving a liquid pump, and a method for its production

Patent Citations (4)

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Publication number Priority date Publication date Assignee Title
JPS60102827A (ja) * 1983-11-09 1985-06-07 Fanuc Ltd 電動機
JPS61121729A (ja) * 1984-11-14 1986-06-09 Fanuc Ltd 液冷モ−タ
JPH01198243A (ja) * 1988-02-02 1989-08-09 Fanuc Ltd 液冷モータの冷却用管路接合構造
JPH0255551A (ja) * 1988-08-19 1990-02-23 Fanuc Ltd 液冷モータ用冷却液流路構造

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP0503093A4 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0585644A1 (fr) * 1992-09-03 1994-03-09 Licentia Patent-Verwaltungs-GmbH Machine électrique entièrement fermée, refroidie en surface par liquide
DE4229395A1 (de) * 1992-09-03 1994-03-10 Licentia Gmbh Oberflächengekühlte, geschlossene elektrische Maschine
CN103270300A (zh) * 2010-12-14 2013-08-28 阿尔弗雷德·凯驰两合公司 用于高压清洁设备的电机泵单元以及高压清洁设备

Also Published As

Publication number Publication date
JPH04145859A (ja) 1992-05-19
EP0503093A1 (fr) 1992-09-16
EP0503093A4 (en) 1993-03-24

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